SolaX Inverter Review 2026: X1 and X3-Hybrid G4 Specs, Price and Verdict

SolaX Power is a Chinese inverter and battery maker based in Hangzhou, Zhejiang, selling in Australia through its local importer, SolaX Power Aus Pty Ltd in Dandenong South, Victoria. On Australian quotes it appears mostly as a battery-ready package: a SolaX hybrid inverter plus a stack of SolaX batteries, offered by budget and mid-range installers as an alternative to Sungrow or GoodWe.

This review covers the two hybrid families installers quote now: the single-phase X1-Hybrid G4 (3.0 to 7.5 kW) and the three-phase X3-Hybrid G4 (5 to 15 kW), plus the newer X3-HYB G4 Pro and the batteries they pair with. It is based on manufacturer documentation, warranty terms, published pricing and owner and installer feedback; Solar Cobber did not test the product and was not paid by the manufacturer.

What it is and how it works

A hybrid inverter does two jobs. It converts solar DC power to AC for your home, and it charges and discharges a high-voltage battery directly from the panels. When the grid fails, it switches to an emergency power supply (EPS) output that keeps chosen circuits running from the battery and panels.

The current Australian line-up looks like this:

All three were on the Clean Energy Council (CEC) approved inverter list when we checked on 14 October 2026. The X3-HYB G4 Pro is the newer three-phase design, with up to three 20 A trackers, two battery ports (25 A each) and an IP66 enclosure, so a 2026 three-phase quote may name either model.

Matching batteries. SolaX says the G4 hybrids pair with its Triple Power T-BAT batteries and the HS36 or HS51 high-voltage stacks. The main current options are:

• TSYS-HS51: 5.1 kWh LFP modules, 2 to 13 per system (10.2 to 66.5 kWh nominal), IP66, with versions with and without cell heating. CEC listed to 31 December 2027.
• T58 V3: 5.8 kWh modules, 1 to 6 per stack (5.8 to 34.6 kWh), IP66. We could not find the V3 on the CEC list; only the older T58 V2 (T-BAT H 5.8 V2 to 23 V2) appears, and that listing expires on 22 October 2026.
• T-BAT HS S3.6 series: HS7.2 to HS46.8 models, CEC listed to 22 November 2026.

Specs that matter in Australia

Heat derating. Both ranges are rated for -35 to +60°C but derate above 45°C, and the enclosures are IP65. SolaX’s own March 2026 Victorian case study says “the quiet, fanless design of SolaX inverters means they can reduce power in extreme heat” and that a shaded, ventilated spot is “non-negotiable”. The X1 7.5 kW and the X3 12 and 15 kW models use a fan instead. Keep any SolaX hybrid off a west-facing wall in full sun.

Backup behaviour. Rated EPS output equals the inverter’s AC rating (for example 5,000 VA on the X1 5.0), with switchover in under 10 ms, quick enough that most electronics will not reset. Short peaks for motor starts run for 10 seconds: 6,000 VA on the X1 3.0 and 3.7, 7,500 VA on the 5.0 and 11,250 VA on the 7.5, and 12 to 22.5 kVA on the X3. What is actually backed up depends on how your installer wires the EPS circuits, and Whirlpool posters advise checking that air conditioners and ovens will not overload it. SolaX also advertises a “Super-Backup” mode that runs from the panels in a blackout without a battery, though it says the power is limited and drops out when cloud passes.

Single vs three phase and export limits. In Australia the X1 5.0 is capped at 4,999 W to fit the common 5 kW per phase export rule, and the X3 10 kW and 15 kW models are similarly capped just below their rating. Both ranges support export control with a CT or meter. SolaX says the X3 sends solar to whichever phase is drawing load. Our single vs three phase guide explains which you need.

Solar oversizing. SolaX recommends arrays up to double the inverter rating (for example 10 kWp on the X1 5.0, 30 kWp on the X3 15), with 16 A per tracker (20 A short circuit) on the X1. That suits most residential panels on one string per tracker, but check the panel’s current rating if your installer is using very large-format modules.

Battery range. The X1 accepts batteries from 80 to 480 V and the X3 from 120 to 800 V, both at up to 30 A. The X3 datasheet notes it needs at least three HS25 or HS36 modules. Check that your quoted battery size suits the inverter.

VPPs. Reposit Power uses SolaX G4 hybrids with its controller and praises their fast response to commands. SolaX says its inverters integrate with Amber and Origin VPP programs, but Amber’s SmartShift compatibility page did not list SolaX when we checked in October 2026, so confirm with the retailer.

Price in Australia

SolaX does not publish retail prices. Australian online retailers listed the X1-Hybrid G4 5 kW at A$2,302.50 and the X3-Hybrid G4 5 kW at A$2,940 including GST in October 2026, supply only. A trade supplier listed the X3-Hybrid G4 10 kW at A$2,929.42 excluding GST. We found no published installed price for the inverter alone, because SolaX hybrids are almost always sold with a battery.

What drives the price is mainly the battery: its size, whether it is on the CEC list (which decides whether you get the federal Cheaper Home Batteries discount), and whether backup wiring or a Matebox is included. From 1 May 2026 the discount is 6.8 STCs per usable kWh for the first 14 kWh, 60% of that from 14 to 28 kWh and 15% from 28 to 50 kWh. The solar side of the system attracts STCs under the separate small-scale solar rebate. Our battery rebate guide covers state top-ups.

Warranty: the fine print

SolaX’s Australian warranty terms (V1.6, applying to products installed from 1 February 2025) set out:

• Term: 10 years from installation for the X1-Hybrid G4, X3-Hybrid G4 and X3-HYB G4 Pro, but no more than 129 months from manufacture. Ask how old the stock is.
• No battery condition: unlike some rivals, the 10 years is not conditional on pairing a SolaX battery. However, batteries and controllers installed by third parties are excluded, as is damage caused by unauthorised third-party control hardware or software.
• Registration: you must register on SolaXCloud with the invoice and serial number; failure to register is listed as an exclusion.
• Claims: go through your installer or distributor first, escalating to SolaX if needed. Faults must be reported within 4 weeks and claims made within one month of failure.
• Costs: SolaX covers transport up to A$200 per case in “certain areas”. It may charge a standard A$150 (ex GST) service fee per case, and will invoice you for the replacement and delivery if no fault is found.
• Moving the inverter voids the warranty unless a qualified installer reinstalls it at the same address and sends SolaX a test report.
• Batteries: 10 years to 70% retained capacity, with throughput caps such as 30.2 MWh for a T-HS10.2 and 75.5 MWh for a T-HS25.6. Extra modules can be added within a year of installation; after that you need SolaX’s consent.
• Accessories: Matebox, meters and Wi-Fi dongles carry 2 years. Paid extensions must be bought within 6 months of installation.

The terms confirm that Australian Consumer Law guarantees still apply.

What owners and installers report

On SolarQuotes, SolaX inverters average 4.4 out of 5 from 432 owner reviews (286 five-star, 20 one-star) at the time of writing. SolarQuotes’ verdict is “much better inverters and software these days, after a shaky start”, calling SolaX “a reasonably safe choice” for a good-value budget inverter. It lists the price and app as positives and the LG battery recall as a negative.

Recurring patterns:

• App and monitoring. Owners on SolarQuotes and Whirlpool generally like SolaXCloud, with one 2026 Whirlpool poster calling it “very similar to Sungrow iSolarCloud”.
• Support. Whirlpool owners in early 2026 reported calls answered in two to five minutes and remote configuration on request, contrasting it favourably with Fox ESS. SolarQuotes owner reviews are more mixed, with some praising fast warranty fixes and others reporting no response.
• Reliability. A minority of SolarQuotes reviewers report units failing within a couple of years.

Recall history. In 2022 SolaX recalled LG S/A Gen2 batteries supplied in its X-Cabinet, Power Station and Opal Storage systems because of fire risk, and offered to cap charge at 75% until replacement. The recall does not cover the G4 hybrids or current SolaX batteries, but if you have an older SolaX system, check it on the CEC recalls page.

SolaX X1 / X3-Hybrid G4 vs alternatives

Choose SolaX if you want a budget hybrid with fast backup, a plain 10-year warranty and a wide size range, and you are happy with a SolaX battery. The Sungrow SH RS is the closest rival, with broad VPP support. Choose Solis if you want to pick a third-party 48 V battery, or the Fronius GEN24 Plus if you value premium-brand service over seamless backup.

Questions to ask your installer

• Is this the X3-Hybrid G4 (-D) or the X3-HYB G4 Pro (-P), and why that one for my home?
• Which SolaX battery is included, and is that exact model on the CEC list today so the federal discount applies?
• What is the price before and after the Cheaper Home Batteries discount, and how many STCs are you claiming?
• Which circuits will the EPS output back up, and will my air conditioner or oven overload it?
• Where will the inverter go, and will it be out of direct sun to limit derating above 45°C?
• Will you register the inverter and battery on SolaXCloud and give me owner access at handover?
• How old is the stock, given the warranty is capped at 129 months from manufacture?
• If I want to add battery modules after the first year, will you arrange SolaX’s consent?

FAQ

Is SolaX a good inverter brand?

It is a large, established manufacturer with a local office and a 4.4 out of 5 SolarQuotes owner rating. It is a value brand rather than a premium one, so the quality of the installer matters.

What is the difference between the SolaX X1-Hybrid and X3-Hybrid?

The X1 is for single-phase homes (3 to 7.5 kW) and the X3 is for three-phase homes (5 to 15 kW). Your meter box determines which you need.

How long is the SolaX inverter warranty in Australia?

Ten years from installation for the X1 and X3-Hybrid G4, capped at 129 months from manufacture, provided the system is registered and installed by an authorised installer.

Can I use a non-SolaX battery with a SolaX hybrid?

The warranty excludes batteries installed by third parties and damage from unauthorised third-party controllers, and SolaX’s compatibility statements name its own batteries. Treat it as a SolaX-battery system.

Does a SolaX hybrid work in a blackout?

Yes, with a battery the EPS output switches over in under 10 ms and supplies up to the inverter’s rated power, with short higher peaks. Only the circuits wired to EPS are backed up.

Which SolaX battery gets the federal rebate?

When we checked on 14 October 2026, the TSYS-HS51 stacks were CEC listed to the end of 2027 and the T-BAT HS S3.6 series to 22 November 2026. The T58 V3 was not listed, and the T58 V2 listing expires on 22 October 2026.

Find an installer

SolaX systems are only as good as the commissioning, EPS wiring and handover. Browse our installer directory to compare accredited installers near you, and ask each to name the exact inverter suffix, battery model, backup circuits and rebate amount on the quote.